CN114766743A - Aerosol generating device with heater - Google Patents

Abstract

Provided is an aerosol-generating device provided with a heater. There is provided an aerosol-generating device comprising: a heater including a first electrically conductive heating element formed along a first path on an electrically insulating substrate, a second electrically conductive heating element formed along a second path on the electrically insulating substrate, and a temperature sensor track formed along a third path in a region between the first path and the second path, for generating an aerosol by heating a cigarette accommodated in the aerosol-generating device; a battery supplying power to the heater; and a control unit for controlling the power supplied from the battery to the heater and monitoring the temperature detected by the temperature sensor rail.

Description

Aerosol generator with heater

This application is for the filing date of October 29, 2018, the national application number is 201880055847.6 (the divisional application number is 202010761215.0, the international application number is PCT/KR2018/012899), and the invention title is "aerosol generating device with heater" "The divisional application of the invention patent application filed again.

technical field

The present invention relates to an aerosol generating device provided with a heater.

Background technique

Recently, there has been an increasing demand for alternative methods for overcoming the disadvantages of conventional cigarettes. For example, there is an increasing demand for a method of generating an aerosol by heating an aerosol-generating substance within a cigarette, as opposed to a method of generating an aerosol by burning a cigarette. Therefore, research on heated cigarettes or heated aerosol generating devices is increasingly active.

SUMMARY OF THE INVENTION

Invention to solve problem

Various embodiments aim to provide an aerosol generating device with a heater. The technical problems to be achieved by the present invention are not limited to the above technical problems, and other technical problems can be inferred from the following embodiments.

means to solve the problem

According to one aspect, an aerosol generating device includes: a heater for generating an aerosol by heating a cigarette accommodated in the aerosol generating device, including a first conductive heating element formed along a first path on an electrically insulating substrate, the second conductive heating element formed along the second path on the electrically insulating substrate and the temperature sensor track formed along the third path in the region between the first path and the second path; the battery, to the a heater supplies electric power; and a control unit that controls the electric power supplied from the battery to the heater and monitors the temperature detected by the temperature sensor track.

In addition, the first path may be formed on the outer side of the third path on the electrically insulating substrate, and the second path may be formed on the inner side of the third path on the electrically insulating substrate.

In addition, the first conductive heating element and the second conductive heating element can be heated by the supply of the electric power, and the temperature sensor track can detect the first conductive heating element and the second conductive heating element based on the The temperature of the heater of the heating.

In addition, the heater may include: a heat generating area where the first conductive heating body, the second conductive heating body and the temperature sensor track are formed; and a non-heating area for making the first conductive heating body generate heat The end of the body, the end of the second conductive heating body and the end of the temperature sensor track are electrically connected to the battery.

In addition, the first conductive heating element may have a first end and a second end on the first path in the heating region, and the second conductive heating element may have the first end in the heating region. A third end and a fourth end on two paths, the temperature sensor track may have a fifth end and a sixth end on the third path in the heat-generating area, and the fifth end is in the heat-generating area may be located between the first end and the third end, and the sixth end may be located between the second end and the fourth end in the heat generating region.

In addition, the non-heat-generating area may include: a first connection part for connecting the first end and the third end to the battery; a second connection part for connecting the second end and the battery the fourth end is connected to the battery; and a pair of via holes are formed at the fifth end and the sixth end, respectively.

In addition, the first connection part and the second connection part can be made into the same conductive elements as the first conductive heating element and the second conductive heating element, and can be made into a smaller conductive element than the first conductive heating element. The heating body and the second conductive heating body have a larger width or a larger thickness.

In addition, the temperature sensor track may have a different thermal resistance coefficient (TCR, Thermal Coefficient Resistance: thermal resistance coefficient) or a different resistance value from the first conductive heating element and the second conductive heating element. conductive element.

In addition, the first conductive heating element and the second conductive heating element may have a TCR value between 1200 and 1800 ppm/°C, and the temperature sensor track may have a TCR value between 3500 and 4100 ppm/°C.

In addition, the first conductive heating element and the second conductive heating element may have a resistance value between 0.7Ω to 0.85Ω at a normal temperature of 25°C, and the temperature sensor track may have a resistance value of 12Ω to 14Ω at a normal temperature of 25°C resistance value between.

In addition, the interval between the temperature sensor track and the first conductive heating body and the interval between the temperature sensor track and the second conductive heating body may be at least 0.5 mm.

In addition, the heater may be implemented in the form of an internal heater inserted into the cigarette to heat the cigarette, or in the form of an external heater that heats the outside of the cigarette.

According to another aspect, a heater for an aerosol generating device for generating an aerosol by heating a cigarette includes: a first conductive heating element formed along a first path on an electrically insulating substrate; and a second conductive heating element formed in the the electrically insulating substrate is formed along a second path; and a temperature sensor track is formed along the third path in an area between the first path and the second path.

Invention effect

According to the above, by arranging the temperature sensor track in the area between the different conductive heating elements on the electrically insulating substrate, the temperature of the temperature sensor track on the heating part of the heater can be detected more uniformly and accurately.

Description of drawings

1 to 3 are diagrams showing an example of a cigarette-insertion aerosol generating device.

FIG. 4 is a diagram showing an example of a cigarette.

FIG. 5 is a diagram showing a planar structure of a heating chip according to an embodiment.

FIG. 6 is a detailed view showing a planar structure of a heating chip according to an embodiment.

FIG. 7 is a cross-sectional view of the planar structure of the heating chip in FIG. 6 viewed from the side along line XX'.

8 and 9 are diagrams showing a heater manufactured using the heating sheet of FIG. 6 .

FIG. 10 is a diagram for explaining simulation results of temperature detection according to mutually different implementations of temperature sensor tracks.

Detailed ways

According to one aspect, an aerosol generating device includes: a heater for generating an aerosol by heating a cigarette accommodated in the aerosol generating device, including a first conductive heating element formed along a first path on an electrically insulating substrate, the second conductive heating element formed along the second path on the electrically insulating substrate and the temperature sensor track formed along the third path in the region between the first path and the second path; the battery, to the a heater supplies electric power; and a control unit that controls the electric power supplied from the battery to the heater and monitors the temperature detected by the temperature sensor track.

According to another aspect, a heater for an aerosol generating device for generating an aerosol by heating a cigarette includes: a first conductive heating element formed along a first path on an electrically insulating substrate; and a second conductive heating element formed in the the electrically insulating substrate is formed along a second path; and a temperature sensor track is formed along the third path in an area between the first path and the second path.

The terms used in the embodiments are general terms that are currently widely used as far as possible in consideration of the functions in the present invention, but according to the intentions of those skilled in the art, precedents or the appearance of new technologies, these terms may be Change. In addition, in a specific case, the applicant has arbitrarily selected some terms, but in this case, the meaning of the selected terms will be described in detail in the description part of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the overall content of the present invention, and not only based on the names of the terms.

Throughout the specification, a part "comprising" a certain part means that unless there is a description of the contrary characteristics, the part may also include other parts, rather than exclude the inclusion of other parts. In addition, terms such as "...unit" and "...module" described in this specification refer to units that process at least one function or action, and can be implemented in hardware or software, or in a combination of hardware and software. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement them. However, the present invention is not limited only to the embodiments described herein, but can be implemented in various ways.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 are diagrams showing an example of a cigarette-insertion aerosol generating device.

1 , an aerosol generating apparatus 10000 includes a battery 11000 , a control unit 12000 , and a heater 13000 . 2 and 3 , the aerosol generating device 10000 further includes a vaporizer 14000 . In addition, the cigarette 20000 can be inserted into the inner space of the aerosol generating device 10000.

The aerosol generating apparatus 10000 shown in FIGS. 1 to 3 shows only the components related to this embodiment. Therefore, those skilled in the art related to this embodiment should understand that the aerosol generating device 10000 may further include other conventional components other than those shown in FIGS. 1 to 3 .

In addition, although the aerosol generating apparatus 10000 is shown to include the heater 13000 in FIGS. 2 and 3 , the heater 13000 may be omitted as required.

FIG. 1 shows that the battery 11000, the control unit 12000, and the heater 13000 are arranged in a row. 2 shows that the battery 11000, the control unit 12000, the vaporizer 14000, and the heater 13000 are arranged in a row. In addition, FIG. 3 shows that the vaporizer 14000 and the heater 13000 are arranged in parallel. However, the internal structure of the aerosol generating device 10000 is not limited to the structure shown in FIGS. 1 to 3 . In other words, according to different designs of the aerosol generating apparatus 10000, the arrangement of the battery 11000, the control unit 12000, the heater 13000, and the vaporizer 14000 can be changed.

When the cigarette 20000 is inserted into the aerosol generating device 10000, the aerosol generating device 10000 can generate aerosol from the cigarette 20000 and/or the vaporizer 14000 by operating the heater 13000 and/or the vaporizer 14000. The aerosol generated by the heater 13000 and/or the vaporizer 14000 is delivered to the user through the cigarette 20000.

According to requirements, in the case where the cigarette 20000 is not inserted into the aerosol generating device 10000, the aerosol generating device 10000 may also heat the heater 13000.

The battery 11000 supplies electric power used for the operation of the aerosol generating device 10000 . For example, the battery 11000 can supply electric power for heating the heater 13000 or the carburetor 14000, and can supply electric power required for the operation of the control unit 12000. In addition, the battery 11000 can supply the electric power necessary for the operation of the display, the sensor, the motor, and the like provided in the aerosol generating device 10000 .

The control unit 12000 controls the operation of the aerosol generating device 10000 as a whole. Specifically, the control unit 12000 controls the operations of other structures included in the aerosol generating device 10000 in addition to the operations of the battery 11000 , the heater 13000 , and the vaporizer 14000 . In addition, the control unit 12000 can also determine whether or not the aerosol generating device 10000 is in an operable state by checking the state of each structure of the aerosol generating device 10000 .

The control unit 12000 includes at least one processor. The processor may be implemented as a plurality of logic gate arrays, or may be implemented as a combination of a general-purpose microprocessor and a memory that stores programs executable in the microprocessor. In addition, those skilled in the art to which this embodiment pertains should understand that other forms of hard disks may also be used for implementation.

The heater 13000 may be heated by electric power supplied from the battery 11000 . For example, when a cigarette is inserted into the aerosol generating device 10000, the heater 13000 may be located outside the cigarette. Therefore, the heated heater 13000 can raise the temperature of the aerosol-generating substance in the cigarette.

Heater 13000 may be a resistive heater. For example, the heater 13000 is provided with a conductive track, and the heater 13000 can be heated as current flows in the conductive track. However, the heater 13000 is not limited to the above examples, and is not limited as long as it can heat to a desired temperature. Here, the desired temperature may be preset in the aerosol generating device 10000, or the desired temperature may be set by the user.

In one aspect, as another example, heater 13000 may be an induction heating heater. Specifically, the heater 13000 may be provided with a conductive coil for heating the cigarette in an induction heating manner, and the cigarette may include a heat sensitive body capable of being heated by the induction heating heater.

For example, the heater 13000 may include a tube type heating member, a plate type heating member, a needle type heating member or a rod type heating member, and the inside or the outside of the cigarette 20000 may be heated according to the shape of the heating member.

In addition, a plurality of heaters 13000 may be provided in the aerosol generating apparatus 10000 . At this time, the plurality of heaters 13000 may be arranged to be inserted into the inside of the cigarette 20000, and may also be arranged outside the cigarette 20000. In addition, some heaters among the plurality of heaters 13000 may be provided so as to be able to be inserted into the inside of the cigarette 20000 , and the remaining heaters may be provided outside the cigarette 20000 . In addition, the shape of the heater 13000 is not limited to the shape shown in FIGS. 1 to 3 , and various shapes may be formed.

The vaporizer 14000 can heat the liquid composition to generate an aerosol, and the generated aerosol can be delivered to the user through the cigarette 20000. In other words, the aerosol generated by the vaporizer 14000 can move along the airflow path of the aerosol generating device 10000, and the airflow path can be configured so that the aerosol generated by the vaporizer 14000 is delivered to the user via the cigarette.

For example, the vaporizer 14000 may include a liquid storage part, a liquid transfer unit, and a heating part, but is not limited thereto. For example, the liquid storage part, the liquid delivery unit, and the heating component may be included in the aerosol generating device 10000 as separate modules.

The liquid storage portion can store the liquid composition. For example, the liquid composition may be a liquid including a tobacco-containing material containing volatile tobacco flavor components, and may also be a liquid including a non-tobacco material. The liquid storage part can be made detachable from the vaporizer 14000 or installed in the vaporizer 14000 , and can be made integral with the vaporizer 14000 .

For example, liquid compositions may include water, solvents, ethanol, plant extracts, fragrances, fragrances, or vitamin mixtures. The fragrance may include, but not limited to, menthol, peppermint, spearmint oil, various fruit fragrance ingredients, and the like. Flavoring agents may include ingredients capable of providing a variety of aromas or flavors to the user. The vitamin mixture may be a mixture of at least one of vitamin A, vitamin B, vitamin C and vitamin E, but is not limited thereto. Additionally, the liquid compositions may include aerosol formers such as glycerol and propylene glycol.

The liquid transfer unit can transfer the liquid composition of the liquid storage part to the heating part. For example, the liquid transport unit may be a wick such as cotton fiber, ceramic fiber, glass fiber, porous ceramic, but not limited thereto.

The heating part is a part for heating the liquid composition conveyed by the liquid conveying unit. For example, the heating member may be a metal hot wire, a metal hot plate, a ceramic heater, etc., but is not limited thereto. In addition, the heating element may be formed of a conductive heating wire such as a nickel-chromium wire, and may be arranged to be wound around the liquid conveying unit. The heating member may be heated by current supply and transfer heat to the liquid composition in contact with the heating member, thereby heating the liquid composition. As a result, an aerosol can be generated.

For example, the vaporizer 14000 may be referred to as a cartomizer or an atomizer, but is not limited thereto.

On the one hand, the aerosol generating device 10000 may further include other commonly used components other than the battery 11000 , the control part 12000 , the heater 13000 and the vaporizer 14000 . For example, aerosol generating device 10000 may include a display capable of outputting visual information and/or a motor for outputting haptic information. Additionally, the aerosol generating device 10000 may include at least one sensor (a puff detection sensor, a temperature detection sensor, a cigarette insertion detection sensor, etc.). In addition, the aerosol generating device 10000 may be configured to allow the outside air to flow in or the inside air to flow out even in a state where the cigarette 20000 is inserted.

Although not shown in FIGS. 1 to 3 , the aerosol generating device 10000 may form a system together with a separate bracket. For example, the cradle may be used to charge the battery 11000 of the aerosol generating device 10000. Alternatively, the heater 13000 may also be heated in a state where the bracket and the aerosol generating device 10000 are combined.

Cigarette 20000 may be similar to a regular burning cigarette. For example, the cigarette 20000 may be differentiated into a first portion comprising an aerosol generating substance and a second portion comprising a filter or the like. Alternatively, the second portion of the cigarette 20000 may also include an aerosol generating substance. For example, an aerosol-generating substance in the form of granules or capsules can be inserted into the second part.

The interior of the aerosol generating device 10000 may be inserted into the entirety of the first part, and the second part may be exposed to the outside. Alternatively, the interior of the aerosol-generating device 10000 may be inserted into a portion of the first portion, or may be inserted into a portion of the first portion and the second portion. The user can inhale the aerosol while holding the second part in the mouth. At this time, when the external air passes through the first part, an aerosol is generated, and the generated aerosol is transmitted to the user's mouth through the second part.

As an example, outside air may flow in through at least one air passage formed in the aerosol generating device 10000 . For example, the opening and closing of the air passage formed in the aerosol generating device 10000 and/or the size of the air passage can be adjusted by the user. Thereby, the amount of atomization, the feeling of smoking, etc. can also be adjusted by the user. As another example, outside air may flow into the interior of the cigarette 20000 through at least one hole formed on the surface of the cigarette 20000 .

Hereinafter, an example of the cigarette 20000 will be described with reference to FIG. 4 .

FIG. 4 is a diagram showing an example of a cigarette.

4, the cigarette 20000 includes a tobacco rod 21000 and a filter rod 22000. The first portion described with reference to FIGS. 1-3 includes tobacco rods 21000 and the second portion includes filter rods 22000 .

The filter rod 22000 is shown in FIG. 4 as a single mouth section, but is not limited thereto. In other words, filter rod 22000 may be constructed from multiple mouth segments. For example, filter rod 22000 may include a first mouth section that cools the aerosol and a second mouth section that filters a specified component contained within the aerosol. Additionally, filter rod 22000 may also include at least one mouth section that performs other functions, as desired.

Cigarettes 20,000 are wrapped by at least one wrapper 24,000. The wrapping paper 24000 is formed with at least one hole into which external air flows or internal air flows out. As an example, cigarettes 20,000 may be packaged with one wrapping paper 24,000. As another example, the cigarette 20000 may be packaged by overlapping two or more wrapping papers 24000. For example, tobacco rod 21000 is wrapped in a first wrapper and filter rod 22000 is wrapped in a second wrapper. In addition, the tobacco rod 21000 and the filter rod 22000 wrapped in a single wrapper are combined, and the cigarette 20000 is repackaged in a third wrapper as a whole. If the tobacco rod 21000 or the filter rod 22000 is composed of a plurality of mouth sections, respectively, each mouth section may be wrapped in a single wrapper. In addition, the whole of the cigarette 20000, which is formed by combining the segments wrapped in a single wrapping paper, can be repackaged by another wrapping paper.

The tobacco rod 21000 may include an aerosol generating substance. For example, the aerosol-generating substance may include at least one of glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, but is not limited thereto. Additionally, the tobacco rod 21000 may contain other additives such as flavoring agents, humectants, and/or organic acids. In addition, a flavoring liquid such as menthol or a moisturizing agent may be added to the tobacco rod 21000 by spraying the tobacco rod 21000 .

Tobacco rod 21000 can be made in a variety of ways. For example, the tobacco rod 21000 may be made of sheet material, and may also be made of strand material. In addition, the tobacco rod 21000 may be made from tobacco leaves obtained by shredding tobacco sheets. Additionally, the tobacco rod 21000 may be surrounded by a thermally conductive substance. For example, the thermally conductive substance may be a metal foil such as aluminum foil, but is not limited thereto. As an example, the heat-conducting substance surrounding the tobacco rod 21000 can evenly disperse and transfer heat to the tobacco rod 21000 to increase the thermal conductivity applied to the tobacco rod, thereby improving the taste of the tobacco. In addition, the thermally conductive material surrounding the tobacco rod 21000 can function as a heat sensitive body heated by the induction heating type heater. At this time, although not shown in the figures, the tobacco rod 21000 may be provided with an additional heat-sensing body in addition to the heat-conducting material surrounding the outside.

The filter rod 22000 may be a cellulose acetate filter. In one aspect, the shape of the filter rod 22000 is not limited. For example, the filter rod 22000 may be a cylindrical type rod or a tubular type rod with a hollow inside. Additionally, the filter rod 22000 may be a semi-concealed type rod. If the filter rod 22000 is constructed from multiple mouth segments, at least one of the multiple mouth segments can be made in different shapes.

The filter stick 22000 can be made to generate fragrance. As an example, the seasoning liquid may be sprayed onto the filter rod 22000, or fibers coated with the seasoning liquid may be separately inserted into the filter rod 22000.

Additionally, the filter rod 22000 may include at least one capsule 23000. Here, the capsule 23000 can perform a function of generating a fragrance or a function of generating an aerosol. The capsule 23000 may be a structure in which the fragrance-containing liquid content is wrapped with a film. The capsule 23000 may have a spherical or cylindrical shape, but is not limited thereto.

If the filter rod 22000 includes a nozzle section for cooling the aerosol, the cooling nozzle section may be made of a polymer material or a biodegradable polymer material. For example, the cooling nozzle segment may be made of pure polylactic acid, but is not limited thereto. Alternatively, the cooling nozzle segment can be made from a cellulose acetate filter with multiple holes perforated. However, the cooling nozzle segment is not limited to the above example, and is not limited as long as it can perform the function of cooling the aerosol.

In one aspect, although not shown in Figure 4, the cigarette 20000 of an embodiment may also include a front filter. The front end filter is located in the tobacco rod 21000 on the opposite side of the filter rod 22000. The front end filter can prevent the tobacco rod 21000 from being detached to the outside, and can prevent liquefied aerosol from flowing from the tobacco rod 21000 into the aerosol generating device (10000 in FIGS. 1 to 3 ) during smoking.

The structure of the heating chip of the heater 13000 for producing the aerosol generating device 10000 in FIGS. 1 to 3 will be described in detail below. Accordingly, the reference numerals used in Figures 1 to 3 may likewise be used in the description of the following figures.

FIG. 5 is a diagram showing a planar structure of a heating chip according to an embodiment.

As shown in FIG. 1, the heater 13000 can be made in the shape of a combination of cylinder and cone, and realized in the form of an internal heater inserted into the cigarette 20000, or as shown in FIGS. 2 and 3, the heater 13000 can be made into Cylindrical type (or tube type), and realized in the form of an external heater that heats the outside of the cigarette 20000. FIG. 5 is a plan view of a heater sheet 500 for manufacturing the heater 13000 (internal heater or external heater).

The heater 13000 may be a heater implemented using a resistance element. For example, the heater 13000 may include a heating sheet 500 having a resistive heating element, such as a conductive track. Electricity can be supplied to the resistance heating element from the battery 11000, and when the current flows through the resistance heating element, the resistance heating element is heated.

For stable use, electric power according to the specifications of 3.2V, 2.4A, and 8W may be supplied to the heating plate 500 of the heater 13000, but is not limited thereto. For example, when power is supplied to the heating element 500 of the heater 13000, the surface temperature of the heater 13000 may rise to 400°C or higher. The surface temperature of the heater 13000 may rise to about 350° C. until more than 15 seconds after power is supplied to the heater 13000 . However, the elevated temperature range can be varied differently.

Referring to the planar structure of the heating sheet 500 of the heater 13000, a conductive track for heating the cigarette 20000 accommodated in the aerosol generating device 10000 is formed on the electrically insulating substrate 50 of the heating sheet 500, that is, the first conductive heating element 51 and the second conductive heating element 51. The two conductive heating elements 52 are also formed with a temperature sensor track 53 for detecting the temperature of the heater 13000 when the conductive heating elements 51 and 52 are heated.

The electrically insulating substrate 50 may correspond to a green sheet composed of a ceramic composite material. Alternatively, the electrically insulating substrate 50 may be made of paper, glass, ceramic, anodized metal, coated metal, or polyimide. That is, the electrically insulating substrate 50 may be a substrate fabricated from a variety of suitable substances.

The first conductive heating element 51 and the second conductive heating element 52 can be made into resistance elements, the heating temperature can be determined according to the power consumption of the resistance, and the power consumption of the resistance of the first conductive heating element 51 and the second conductive heating element 52 can be determined. The resistance values of the first conductive heating body 51 and the second conductive heating body 52 are set.

For example, the resistance values of the first conductive heating element 51 and the second conductive heating element 52 may have a value between 0.7Ω and 0.85Ω at room temperature of 25 degrees Celsius, but are not limited thereto. The resistance values of the first conductive heating element 51 and the second conductive heating element 52 may be set differently depending on the constituent material, length, width, thickness, pattern, or the like of the resistance element.

The magnitude of the internal resistance of the first conductive heating element 51 and the second conductive heating element 52 can be increased as the temperature increases according to the resistance temperature coefficient characteristic. For example, in a predetermined temperature range, the temperature of the first conductive heating element 51 and the second conductive heating element 52 may be proportional to the resistance.

The first conductive heating body 51 and the second conductive heating body 52 may be made of tungsten, gold, platinum, silver copper, nickel palladium, or a combination of these. In addition, the first conductive heating element 51 and the second conductive heating element 52 may be doped with appropriate dopants, and may include alloys.

Referring to FIG. 5 , the first conductive heating element 51 may be formed on the electrically insulating substrate 50 along a first path outside the second conductive heating element 52 . Also, the second conductive heating element 52 may be formed on the electrically insulating substrate 50 along the second path inside the first conductive heating element 51 . That is, the planar structure of the heating sheet 500 according to the present embodiment is provided with a pair of conductive heating elements 51 , 52 formed on the electrically insulating substrate 50 .

The first conductive heat-generating body 51 and the second conductive heat-generating body 52 may be respectively formed on the electrically insulating substrate 50 along an angled path having the same pattern of mutually different ratio sizes. However, the pattern or shape of the first path and the second path of the first conductive heating element 51 and the second conductive heating element 52 can be realized in various ways such as a curved shape or an atypical shape, rather than an angled shape . Further, the patterns or shapes of the first path and the second path of the first conductive heating body 51 and the second conductive heating body 52 may be different from each other. However, even so, it is preferable that the first conductive heating element 51 on the electrically insulating substrate 50 has a pattern or shape larger in size than the second conductive heating element 52 and is formed outside the second conductive heating element 52 .

The temperature sensor track 53 is formed on the electrically insulating substrate 50 along the third path in the area between the first path of the first conductive heating element 51 and the second path of the second conductive heating element 52 .

The temperature sensor track 53 detects the temperature of the heater 13000 heated by the first conductive heating element 51 and the second conductive heating element 52 . In the structure of the conventional ceramic heater, only the heating element exists, and the method of predicting the temperature by using the resistance change of the heating element is adopted. However, with this conventional method, it is difficult to accurately predict the actual temperature of the heating element. In contrast to this, the heating plate 500 of the heater 13000 according to this embodiment has a planar structure, and the temperature sensor track 53 is located between the conductive heating body 51 and the conductive heating body 52, so as to uniformly detect the conductive heating body 51 and the conductive heating body 51. The temperature of the body 52 can be accurately measured by the temperature of the heater 13000 .

Like the first conductive heating element 51 and the second conductive heating element 52 , the temperature sensor track 53 can be made of a resistance element or a conductive element. For example, the temperature sensor track 53 may be fabricated from tungsten, gold, platinum, silver copper, nickel palladium, or a combination of these, and may be doped with appropriate dopants, or may include alloys.

Referring to the planar structure of the heating sheet 500 , the first path of the first conductive heating element 51 is formed on the electrically insulating substrate 50 outside the third path of the temperature sensor track 53 , and the second path of the second conductive heating element 52 is formed on the electrically insulating substrate 50 . The substrate 50 is formed on the inner side of the third path of the temperature sensor rail 53 .

The temperature sensor track 53 may be a conductive element having a mutually different TCR (Thermal Coefficient Resistance) or a mutually different resistance value from the first conductive heating element 51 and the second conductive heating element 52 .

Specifically, the first conductive heating body 51 and the second conductive heating body 52 may have conductive elements (or resistive elements) with TCR values between 1200 and 1800 ppm/°C, and the temperature sensor track 53 may have a TCR value between 3500 and 4100 ppm/°C. A conductive element (or a resistive element) with a TCR value in between. On the one hand, the first conductive heating element 51 and the second conductive heating element 52 may be conductive elements (or resistance elements) having a resistance value between 0.7Ω and 0.85Ω at a normal temperature of 25° C., and the temperature sensor track 53 may be in A conductive element (or a resistive element) having a resistance value between 12Ω and 14Ω at a normal temperature of 25°C.

The interval A1 or A2 between the first conductive heating element 51 formed on the electrically insulating substrate 50 and the temperature sensor track 53 may be at least 0.5 mm. In addition, the interval B1 or B2 between the second conductive heating element 52 formed on the electrically insulating substrate 50 and the temperature sensor rail 53 may be at least 0.5 mm. However, these are merely exemplary values, and the intervals described above may be changed according to changes in parameters such as the width and thickness of the conductive heating element 51 and the conductive heating element 52 and the temperature sensor track 53 .

On the one hand, referring to the planar structure of the heating sheet 500, it can be divided into: the heating area, where the first conductive heating body 51, the second conductive heating body 52 and the temperature sensor track 53 are formed; and the non-heating area, which is used for the first conductive heating The end of the body 51 , the end of the second conductive heating body 52 and the end of the temperature sensor track 53 are electrically connected to the battery 11000 . However, in FIG. 5 , for convenience of explanation, only the heat generating region is shown.

In the heating region, the first conductive heating element 51 has a first end 511 and a second end 512 on the first path. In the heating region, the second conductive heating element 52 has a third end 521 and a fourth end 522 on the second path. In the heat generating region, the temperature sensor rail 53 includes a fifth end 531 and a sixth end 532 on the third path.

Here, the fifth end 531 of the temperature sensor track 53 is in the heating region, between the first end 511 of the first conductive heating element 51 and the third end 521 of the second conductive heating body 52, and the sixth end 521 of the temperature sensor track 53 The end 532 is located in the heating region, between the second end 512 of the first conductive heating body 51 and the fourth end 522 of the second conductive heating body 52 .

Referring to FIG. 6 , the non-heat-generating area will be described in more detail.

FIG. 6 is a detailed view showing a planar structure of a heating chip according to an embodiment.

Referring to the planar structure of the heating sheet 600 of the heater 13000 shown in FIG. 6 , a heat-generating region and a non-heat-generating region are distinguished and shown. As described in FIG. 5 , in the heat generating region of the heating sheet 600 , the first conductive heating element 51 , the temperature sensor rail 53 on the inner side, and the second conductive heating element 52 on the inner side are formed.

The non-heating area of the heating sheet 600 includes: the first connection part 61, which connects the first end 511 and the third end 521 described in FIG. 5 to the battery 11000; the second connection part 62, which is described in FIG. The two ends 512 and the fourth end 522 are connected to the battery 11000 . That is, the first connection portion 61 and the second connection portion 62 correspond to electrical connection terminals for supplying the electric power supplied from the battery 11000 to the first conductive heating element 51 and the second conductive heating element 52 .

On the one hand, the non-heat-generating area further includes a pair of via holes 63, 64 formed at the fifth end 531 and the sixth end 532 illustrated in FIG. 5, respectively. The pair of through holes 63 and 64 are electrically connected to the control unit 12000 . That is, the temperature information detected by the temperature sensor track 53 is transmitted to the control unit 12000 through the through holes 63 and 64 , so that the control unit 12000 can monitor the temperature of the heater 13000 .

The first connection portion 61 and the second connection portion 62 may be made of the same conductive element (or resistance element) as the first conductive heating body 51 and the second conductive heating body 52 . However, since the first connection part 61 and the second connection part 62 are located in the non-heat-generating area, it is preferable to make the first connection part 61 and the second connection part 62 more efficient than the first conductive heating element 51 and the second conductive heating element 51 and the second conductive heating element 51. The body 52 has a larger width or a larger thickness so that the temperature of the non-heat-generating area is lower than that of the heat-generating area.

FIG. 7 is a cross-sectional view of the planar structure of the heating chip in FIG. 6 viewed from the side along line XX'.

Referring to FIG. 7 , the first conductive heating body 51 , the second conductive heating body 52 and the temperature sensor track 53 are all formed on the upper surface of the electrically insulating substrate 50 . However, the through holes 63 and 64 for electrically connecting between the temperature sensor rail 53 and the control unit 12000 may be formed through the electrically insulating substrate 50 .

8 and 9 are diagrams showing a heater manufactured using the heating sheet in FIG. 6 .

FIG. 8 is a view of the heater 13000 illustrated in FIG. 1 , which is formed in the shape of a combined cylinder and cone, and is realized in the form of an inner heater 800 inserted into the cigarette 20000 . Specifically, the heater 13000 in FIG. 1 corresponding to the internal heater form 800 can be manufactured as follows: the heating sheet 600 shown in FIG. It is integrated with the structural body 80 . Here, the heating sheet 600 may surround the outside of the structural body 80 such that the upper surface of the electrically insulating substrate 50 illustrated in FIG. 7 , that is, the layer forming the conductive heating elements 51 and 52 and the temperature sensor track 53 faces the outermost.

FIG. 9 is a diagram of a heater 13000 implemented in the form of an external heater 900 that heats the exterior of the cigarette 20000 described in FIG. 2 or FIG. 3 . Specifically, the heater 13000 in FIG. 2 or FIG. 3 corresponding to the external heater form 900 can be made as follows: the heating sheet 600 of FIG. 6 is rolled into a hollow cylindrical or tubular shape to insert a cigarette in the inner space 20000 and heat the outside of the cigarette 20000. Here, the heating sheet 600 may be rolled so that the upper surface of the electrically insulating substrate 50 illustrated in FIG. 7 , that is, the layer forming the conductive heating elements 51 , 52 and the temperature sensor rail 53 faces the inner space.

FIG. 10 is a diagram for explaining simulation results of temperature detection according to mutually different implementations of temperature sensor tracks.

Referring to FIG. 10 , the implementation example 1001 is realized in the following manner: the conductive heating element is arranged on the outermost layer, and the temperature sensor track is arranged on the inner side of the conductive heating element.

Different from this, the implementation example 1002 is implemented in the following manner: According to this embodiment, as shown in FIG. 6 , a first conductive heating element is arranged on the outermost layer, and a temperature sensor track is arranged inside the first conductive heating element, and the second conductive heating element is arranged inside the first conductive heating element. The conductive heating element is additionally provided on the innermost side of the temperature sensor track (M pattern).

Looking at the temperature detection results 1000 between 4 and 7 mm in the heat-generating area, it can be seen that the simulation result is that the temperature detected by the temperature sensor track according to the implementation example 1001 gradually decreases as the distance increases. In other words, according to the temperature detected by the temperature sensor track of the implementation example 1001, the temperature distribution cannot be uniformly detected between the distances of 4 to 7 mm, so it is difficult to accurately measure the temperature of the heater.

However, it can be seen that according to the temperature sensor track of the implementation example 1002 of the present embodiment, even if the temperature is set to various temperatures such as 325°C, 320°C, and 315°C, the detection distance between 4 and 7 mm can be almost uniformly detected. the corresponding temperature. That is, it can be seen that when the conductive heating element and the temperature sensor track are arranged in the implementation manner according to the implementation example 1002 of this embodiment, the temperature of the heating part of the heater can be detected more uniformly and accurately.

It should be understood by those skilled in the art related to this embodiment that a modified solution can be implemented within the scope of not departing from the essential characteristics described above. Accordingly, the disclosed methods should not be considered in a limiting sense, but rather in an illustrative sense. The scope of the invention is defined not by the foregoing invention but by the appended claims, and all differences within the equivalent scope will be construed as being included in the present invention.

Claims (13)

1. An aerosol-generating device, comprising:

a heater for generating an aerosol by heating a cigarette contained in an aerosol-generating device, comprising: a first electrically conductive heating element formed along a first path on an electrically insulating substrate, a second electrically conductive heating element formed along a second path on said electrically insulating substrate, and a temperature sensor track formed along a third path in a region between said first path and said second path;

a battery that supplies power to the heater; and

a control part controlling the power supplied from the battery to the heater and monitoring the temperature detected by the temperature sensor rail.

2. An aerosol-generating device according to claim 1,

the first path is formed outside the third path on the electrically insulating substrate,

the second path is formed inside the third path on the electrically insulating substrate.

3. An aerosol-generating device according to claim 1,

the first conductive heat-generating body and the second conductive heat-generating body are heated by the supply of the electric power,

the temperature sensor track detects the temperature of the heater based on the heating of the first conductive heat-generating body and the second conductive heat-generating body.

4. An aerosol-generating device according to claim 1,

the heater, comprising:

the heating area is formed with the first conductive heating body, the second conductive heating body and the temperature sensor track; and

and the non-heating area is used for enabling the tail end of the first conductive heating element, the tail end of the second conductive heating element and the tail end of the temperature sensor track to be electrically connected with the battery.

5. An aerosol-generating device according to claim 4,

the first conductive heating element is provided with a first end and a second end on the first path in the heating area,

the second conductive heating element is provided with a third end and a fourth end on the second path in the heating area,

the temperature sensor track is provided with a fifth end and a sixth end on the third path in the heat generating area,

the fifth end is located within the heat generating region between the first end and the third end,

the sixth end is located within the heat generating region between the second end and the fourth end.

6. An aerosol-generating device according to claim 5,

the non-heat-generating region includes:

a first connection portion for connecting the first end and the third end to the battery;

a second connection portion for connecting the second end and the fourth end to the battery; and

a pair of through holes formed at the fifth end and the sixth end, respectively.

7. An aerosol-generating device according to claim 6,

the first connection portion and the second connection portion,

a conductive member is made the same as the first conductive heating element and the second conductive heating element,

is made to have a larger width or a larger thickness than the first conductive heat-generating body and the second conductive heat-generating body.

8. An aerosol-generating device according to claim 1,

the temperature sensor track is a conductive element having a TCR different from the TCR or a resistance value different from the resistance value of the first conductive heating element and the resistance value of the second conductive heating element.

9. An aerosol-generating device according to claim 8,

the first conductive heat-generating body and the second conductive heat-generating body have a TCR value of between 1200 and 1800 ppm/DEG C,

the temperature sensor track has a TCR value between 3500 and 4100ppm/° C.

10. An aerosol-generating device according to claim 8,

the first conductive heat-generating body and the second conductive heat-generating body have a resistance value of 0.7 Ω to 0.85 Ω at normal temperature of 25 ℃,

the temperature sensor track has a resistance value between 12 Ω and 14 Ω at ambient temperature 25 ℃.

11. An aerosol-generating device according to claim 1,

the interval between the temperature sensor track and the first conductive heating element and the interval between the temperature sensor track and the second conductive heating element are at least 0.5 mm.

12. An aerosol-generating device according to claim 1,

the heater is implemented in the form of an internal heater inserted into the cigarette to heat the cigarette, or in the form of an external heater to heat the outside of the cigarette.

13. A heater for an aerosol-generating device for generating an aerosol by heating a cigarette, wherein,

the heater for an aerosol-generating device comprises:

a first conductive heating element formed along a first path on an electrically insulating substrate;

a second conductive heating element formed along a second path on the electrically insulating substrate; and

a temperature sensor track formed along a third path in an area between the first path and the second path.

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